Mixed Symmetry States in Even—Even ^96—108Mo Nuclei  

作　　者：ZHANGJiu－Fu LONGGui－Lu 等 

机构地区：[1]DepartmentofPhysics,TsinghauUniversity,Beijing100084,China

出　　处：《Communications in Theoretical Physics》2002年第3期335-340,共6页理论物理通讯（英文版）

基　　金：国家自然科学基金，教育部优秀青年教师资助计划，国家重点基础研究发展计划(973计划)

摘　　要：Excitation energies and clcctromagnetic transition strengths in even-even 96-108Mo muclei have been dcscribed systcmatically by using the proton-neutron interacting boson model (IBM-2). It appears that the properties oflow-lying levels in these isotopes, for which the comparison between experimcnt and theory is possible, can be satisfac-torily described by the IBM-2 model, provided proper account is taken of the presence at low energy of statcs having amixed-symmetry character. It seems possible to identify, in each isotope, a few states having such a character, the lowestones being either 2+2 or 2+3 levels. It is found that these nuclei are in the transition from U(5) to SU(3).

关 键 词：核物理 偶-偶Mo核 混合对称态 

分 类 号：O571[理学—粒子物理与原子核物理]